四、单项填空（共15小题，计15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项
16.The phonetic transcription of the word “paint” is______
A./pent/ B./peint/ C./paint/ D./pænt/
17.If you _____ smoke,please go outside.
A.can B.may C.must D.might
18.My cousin went abroad at_____ age of eighteen.
A.a B.an C.the D.不填
